Damper for round duct



FIG. 1 is a perspective view of a first embodiment of the damper for round duct showing my new design.

FIG. 2 is a top plan view of the damper for round duct of FIG. 1.

FIG. 3 is an end view of FIG. 2.

FIG. 4 is a perspective view of a second embodiment for a damper for round duct showing my new design.

FIG. 5 is a top plan view of the damper for round duct of FIG. 4.

FIG. 6 is a front elevation view of FIG. 5.

FIG. 7 is a right side view of FIG. 5; the left side being a mirror image thereof.

FIG. 8 is a rear view of FIG. 5.

FIG. 9 is a bottom plan view of FIG. 5.

FIG. 10 is a perspective view of a third embodiment for a damper for round duct showing my new design.

FIG. 11 is a top plan view of the damper for round duct of FIG. 10.

FIG. 12 is a front elevation view of FIG. 11.

FIG. 13 is a right side view of FIG. 11; the left side being a mirror image thereof.

FIG. 14 is a rear view of FIG. 11.

FIG. 15 is a bottom plan view of FIG. 11.

FIG. 16 is a perspective view of a fourth embodiment for a damper for round duct showing my new design.

FIG. 17 is a top plan view of the damper for round duct of FIG. 16.

FIG. 18 is a front elevation view of FIG. 17.

FIG. 19 is a right side view of FIG. 17; the left side being a mirror image thereof.

FIG. 20 is a rear view of FIG. 17.

FIG. 21 is a bottom plan view of FIG. 17.

FIG. 22 is a perspective view of a fifth embodiment for a damper for round duct showing my new design.

FIG. 23 is a top plan view of the damper for round duct of FIG. 22.

FIG. 24 is a front elevation view of FIG. 23.

FIG. 25 is a right side view of FIG. 23; the left side being a mirror image thereof.

FIG. 26 is a rear view of FIG. 23; and,

FIG. 27 is a bottom plan view of FIG. 23.

The dashed lines form no part of the claimed invention. 

The ornamental design for a damper for round duct, as shown and described. 